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HA-278-D Alarm Panel with Cellular Dialer and Voice Module
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DK-9520 Keypad
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DK-6812 Network Fingerprint Keypad (MIFARE Card Reader)
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DK-6851B Network Keypad
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DK-2852C (P2) Keypad with AP-02 Wi-Fi Module
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DK-9820 Keypad
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EM-291 (180Kgs)
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PIR-2712 for Security System
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1979
Established a private company "Advanced Electronics Industry" (AEI) in Hong Kong to manufacture Alarm and related electronic products.
1985
The first company in Hong Kong to produce Access Control Keypad.
1986
The first company to produce PIR Motion Sensor.
1991
Moved the production facilities to China.
2000
Set up an independent company "Protect-On Systems Limited" in Hong Kong to develop new products.
2008
An unified company "AEI Protect-On Systems Limited" is formed in Hong Kong and registered a new trademark logo (APO) to reflect the new company and products.
2014
Introduced the DK-2800 MK-II series keypads that offer three operation modes of "Stand-Alone", "Multi-Station" and "High-Security Split-Decoded".
2020
Introduced the NEW Alarm Control Panel of HA-278. The alarm panel can communicate with the Contact ID Monitor Station.
2021
Upgraded the DK-2800 MK-II Series into Wi-Fi version. End-User can control the device remotely.
2025
Introduced the NEW DK-6800 Series of TCP/IP Access Control by using LAN Network of Access Control.